Included in the Queen's calendar are events that she attends every year, or every few years. This year, we're flashing back to the jewels she's worn at these events in the past. This is not a comprehensive series; there are many annual events not listed here. Here's what we've covered so far, with more to come:

Annual Events
March: Commonwealth Day Observance Service
March/April: Royal Maundy Service 
March/April: Easter Service
April: The Queen's Birthday 
May: The State Opening of Parliament 
May: Chelsea Flower Show
June: Trooping the Colour 
June: The Garter Service 
June: Royal Ascot 
September: Balmoral Ghillies Ball
November: Remembrance Events 
November/December: Diplomatic Reception 
December: Christmas Broadcast 
December: Christmas Service

Semi-Annual Events
The Order of Merit (Presentations and Service) 
Commonwealth Heads of Government Meeting (Dinner) 
The Order of the Bath Service